A source at the bar told a tabloid newspaper: "It was a pretty raucous affair. The girls went really crazy for Cosmopolitancocktails. They weren't holding back at all.

"There were about 12 people in the group, but no diva-like antics. They all got stuck in."

Keira is said to be throwing herself into her work following the love split, and her father, William, said earlier this week that he hopes she will remain close to Rupert.

He said: “It wasn't a decision that either of them took lightly. I know they gave it a great deal of thought. I don't think there was any one thing that led to their break-up – it was a whole raft of things, I think.